Hose valve



H. G. 'DAVIS HosE VALVEl March 7, 1939.

Filed July 29, 19:56 2 sheets-sheet 1 lll March 7, 1939.

Filed my 29, 195e H. G. DAVIS 2.149,584

HOSE VALVE 2 Sheets-Sheet 2 Patented Mar. 7,71939 umreo Asrs A ausmPArsNrorr-ics The invention relates to a hose valve that is opened by.forcible flexing of a portion of the hose and automatically closed whenthat portion of the hoseis permitted to straighten out. Its

v 5 principal object is to provide a valve of improved durability anddependability. More specific oloiects and adventeses are apparent fromthe description in which referencey is hed to the accompanying drawings,illustrating preferred em'- A vbodirnents o theinvention.

the valve open; A

Fig. 3 is an elevation partly in Isection of s hose valve combined withe nozzle for directing s. wider stream of fluid constructed inaccordance with the invention, of e type that, is per- 2o ticulerlyadapted for use in automobile servicing without danger of scratching theautomobile nish;

Fig. 4 is an elevation partly in section ci e, valve and nozzleconstructed in accordance with the invention for the handling of steamend other hot fluids; and

Fig. 5 is en elevation showing the outer end thereof.

These specific drawings and the specio-description that follows are todisclose end illustrate the invention and are not to impose limitationsupon the claim. A s

Valves embodyingV the present invention ere generally connected ateither theirinlet or outlet sidewith e, flexible hose for delivering uidunder pressure. lf the velve has its inlet connected with a fixed pipe,es in the device of Cottrell Patent No. 1,864,978, it is customary fora. hose of considerable length to he connected- 40 with the outlet sideor" the valve. In the devices illustrated in the accompanying drawings,how ever, the valve is loceted at the outlet end of the ilexible hoseit.

The valve illustrated in ell of the rieures consists of a brass valvecage il having concentric outer and inner cylindrical anges i2 and El?extending from its outlet side. In the manufacture of the device, theenel of e short length of Duprene hose it is inserted between the twoconcentric danses i2 end is, and the outer ange i2 is then shrunk.inward by Ineens of a suitable die to form s. Arm joint between the-hose ill and the valve cage il. The outer flange Y i2 and theinnerflange i3 ere provided with suitable gripping members for anchoring theend of the hose in place.

In the device of Figures 1 and 2, `e. reinforcing brass tip it mountedon the Aend of the hose It is provided with a restricted passage it that5 causes the uid to emerse in s.v narrow forcible jet. The tip i5 has aportion oi reduced diameterestending inside the hose it integral withwhich is er1-inwardly extending sleeve Il.

in order to clampthe tip letto the hose it, 10 a brass ierrule lll isshrunk upon the outer end of the hose to prs that portion o'i' the hoseagainst suitable teeth provided upon the inwardly extending portion ofthe tip. Cooperating with a seat i@ in the valve cage il is a valvehaving l5 its annular body portion E@ made civ hard rubber. The end ofthe brass valve-omrsting/stem 2i is' used to rivet the rubber bodyportion in a hress cup 22,'end the relative arrangementof the stem 2i.the velve cage il and the inwardly 20 extending sleeve il is such thatthe sleeve overlaps the end of the stem il substentielly when the partsere in the normal position illustrated in. Figure i, but nos its endsuhstentielly spaced from the joint between the valve coge il and 25-the hose it. Because of the substantial overlarp between the sleeve iland the stem 2i in.v normal position, there is no denser that the end ofthe stem will slip out ofthe sleeve when the heeel@ is flexed; yet thedistance between 30 the sleeve il end the hose and valve cage joint is'great enough to permit sufcient flexing of the hose l@ to operate thevelve properly.

A spring 2t is coiled around the hose is in the' device oi Figure 1 toinsure that the valve 35 will continue to he sell closing even thoughthe` hose it should lose its elasticity under heavy duty service or whenhot fluids are used. The eectiveness of the spring 2t is enhanced if itis compressed between the valve cage il and the tip 40- i. It is alsodesirable for the spring to have one end dried to the velve cage, endthe securing of the spring to the velve cese may be convem' ientlyeected hy expanding the end of the spring is supplied te the valve et s,low pressure, it is 50 not ciesiritloleY to rely unen the pressure cithe incoming' duid alone for holding the valve on its seat. f A coilkspring it is, therefore. provided in the valve cage of Pleure l., whichis compressed `by screwing the Dress nipple 2t of the hose i@ 55 and thevalve cage Ii.

2 -f into the threaded end of the valve cage li. A perforated brass cup26 is held between the nipple 25 and the spring 24 to prevent foreignmatter from entering the valve, anda rubber sealing gasket 21 isemployed between the nipple 25 'I'he attachment of the nipple 25 to thehose I 0 is eilected by means of a brass Vf errule 28 in the same manneras kthe attachmentv of the tip Ito the hose Il.

If a. sleeve oi!v rigid wear- .resistant -material overlapping the endof the stem -2I were not employed, the stem would' rapidly wear out thehose I4. Eventually` it would wear a deep groove in the interior of the-hose and the closing of the valve would'be hindered by a tendency ofthe end of the stem to stick in the groove that it had worn intherubber. In some cases it is highly advantageous to have no metal tip `onthe end of the hose i4, so that the hose itself constitutes the nozzle.

A protecting brass sleeve 29 may then be positioned wholly inside thehose Il at the proper distance from the valve cage Il, as shown inFigure 3. The external teeth, by Lmeans ot which the sleeve 29 isanchored inside the hose, should be diierent from the anchoring teethshown in Figure I, in that theyfaiord equal vresistance to movement ofthe sleeve 29 in either direction.

To provide an even stream of .water and to4 prevent water from drippingfrom the nozzle after the valve is closed, a transverse ioraminousmember, such as the perforated brass cup 30,

' may be carried by the sleeve 29. The perforated cup 30 should belocated a slight distance back fromthe end of the nozzle hose il. Afurther safeguard against'the scratching 'of automobile nishes may beprovided by a sleeve of rubberor other elastic -material that surroundsthe `valve cage Ii and extends to the nozzle hose I4. When the valvecage il is connected with a nipple, as in the device of Figure 3, arubber sleeve 3i may be employed that extends from the supply hose lilto the nozzle hose il. l y

' When the valve is usedto convey hotiluids, a

sleeve of thermally lnsulating'matenal surround-- ing the valve cage andextending for a sumcient distance to serve as a. handle may be employed.

. 'Ihe -insulating sleeve should comprise two sec'- tions spaced farenough apartat a point adjacentthe hose that surrounds the valve stem topermit sumcient lexing'ot the hose for unseating the valve.

' In mme 4 s ribbed wooden sleeve sz n n xed in place -on a valve cageand associated parts that are of the same construction as those ofFigure 1, by means of a set screw Il; and a wooden tip Il is slippedupon the spring 23, being retainedthereon by means of a nut `35 that isthreaded on 'to the exterior of the brass tip l5. When hot` fluids areused. the hose may beef. steam stock instead of Duprene.

'Changes in the devices illustrated in the drawings may be made andvariousdevices embodyinsthe substance of the invention may beconstructed to meet various requirements.

Iclaim: 1 In a hose valve, the combination of a and counterbore.said'housingfhaving an annular lvalve housing provided with acentrallylocated bore seat between said bore and conterbore, a.v valve. v

comprising a seating member arranged in said bore and having an axiallyextending stem located ,in' said counterbore. said stem extending beyondsaid sleeve and being ilxedly secured to v'insaid flexible hose in aposition to engage the end of said stem and overlapping a substantialportion of the end ofthe stem', whereby the bending of saidilexibleextension is limited to a portion thereof centrally located withrespect to the lstem," a spring coiled around the hose. having one Y endilvxed to the valve vcage and tending to maintain saidhose in a coaxialposition, and a spring engaging said seating member iin said housing andnormally urging said seating member in contacting engagement with the`annular valve seat.V i l 'Hanom o. navrs.

